When I try and publish this survey from Connect 2.8.4 to Portal 10.3 I get Error 500: Creating feature class failed.
The message doesn't tell me which feature class it fails on.
It has nowhere near 500 columns.
We have been able to publish another survey (the Basic Template) without issues.
It has no field names longer than 32 characters and no field names within a repeat longer than 19 characters.
What am I missing?